diff --git a/recipes-google/gbmc-sysinit/server3/wait_emmc_available.sh b/recipes-google/gbmc-sysinit/server3/wait_emmc_available.sh
index 069fd1c..6bf7ba3 100644
--- a/recipes-google/gbmc-sysinit/server3/wait_emmc_available.sh
+++ b/recipes-google/gbmc-sysinit/server3/wait_emmc_available.sh
@@ -4,7 +4,7 @@
 # timing out after a specified duration.
 
 main() {
-  local -r timeout_seconds=300
+  local -r timeout_seconds=900
   local -r sleep_interval_seconds=30
   local start_time
   start_time=$SECONDS